Availability
The SPICE data, Toolkit software, tutorials and programming lessons are all freely available from the NAIF website. Prospective users are cautioned that it takes some effort to learn to use this software: it is targeted for professionals in the space exploration business.
Read more about this topic: Spacecraft Planet Instrument C-matrix Events
Famous quotes containing the word availability:
“Since ... six weeks ago, there has been no day in which I have not had letters and visits on the subject of my nomination for the Presidency.... I say very little. I have in no instance encouraged any one to work to that end.... I have said the whole talk about me is on the score of availability. Let availability do the work then.”
—Rutherford Birchard Hayes (1822–1893)